Which option correctly lists the three classic statements of the cell theory?

• A. All living organisms are composed of one or more cells; the cell is the basic unit of structure and function in living things; all cells arise from pre-existing cells.
• B. All living things are made of tissues; tissues are the basic unit of life; all tissues arise from pre-existing tissues.
• C. All cells carry out photosynthesis; the cell is the basic unit of evolution; all cells arise from pre-existing organelles.
• D. All cells contain a nucleus; the nucleus is the basic unit of heredity; all cells arise spontaneously from nonliving matter.

Answer: (A)

Verified step by step guidance

1. Recall the three classic statements of the cell theory, which are fundamental principles in cell biology.
2. First, understand that the cell theory states that all living organisms are composed of one or more cells. This emphasizes that cells are the building blocks of life.
3. Second, recognize that the cell is the basic unit of structure and function in living things, meaning that all biological functions occur within cells.
4. Third, remember that all cells arise from pre-existing cells, which highlights the continuity of life through cell division.
5. Compare these principles to the options given and identify the one that matches all three classic statements exactly.